27800747699 has 2 divisors, whose sum is σ = 27800747700. Its totient is φ = 27800747698.

The previous prime is 27800747647. The next prime is 27800747707. The reversal of 27800747699 is 99674700872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27800747699 - 2¹⁶ = 27800682163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (27800747629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900373849 + 13900373850.

It is an arithmetic number, because the mean of its divisors is an integer number (13900373850).

Almost surely, 2^27800747699 is an apocalyptic number.

27800747699 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800747699 is an equidigital number, since it uses as much as digits as its factorization.

27800747699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10668672, while the sum is 59.

The spelling of 27800747699 in words is "twenty-seven billion, eight hundred million, seven hundred forty-seven thousand, six hundred ninety-nine".